# Relationship history for MSHA mine 1500035

Current hierarchy: **Houchens Industries, Inc → Scotty's Contracting & Stone, LLC → Hart County Stone**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Summit Materials LLC → Hart County Stone; 1950-01-01 to 2022-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Hart Stone Company Inc → Hart County Stone; 1950-01-01 to 1992-03-15; source msha-controller-operator-history
- **controller_controls_mine:** James K  Bale → Hart County Stone; 1950-01-01 to 1992-03-15; source msha-controller-operator-history
- **controller_controls_operator:** James K  Bale → Hart Stone Company Inc; 1950-01-01 to 1992-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Hart County Stone Company → Hart County Stone; 1992-03-16 to 2006-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Larry T  Glass → Hart County Stone; 1992-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry T  Glass → Hart County Stone Company; 1992-03-16 to 2006-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Robert K  Reynolds et al → Hart County Stone; 2000-01-01 to 2020-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Glass Paving & Stone → Hart County Stone; 2006-05-09 to 2010-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Glass Paving & Stone; 2006-05-09 to 2010-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Summit Materials LLC → Hart County Stone; 2008-06-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Glass Aggregates → Hart County Stone; 2010-09-13 to 2021-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Glass Aggregates; 2010-09-13 to 2021-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Houchens Industries, Inc → Hart County Stone; 2020-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hinkle Contracting Company LLC → Hart County Stone; 2021-01-08 to 2021-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Hinkle Contracting Company LLC; 2021-01-08 to 2021-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Scotty's Contracting & Stone, LLC → Hart County Stone; 2021-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Houchens Industries, Inc → Scotty's Contracting & Stone, LLC; 2021-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert K  Reynolds et al → Scotty's Contracting & Stone, LLC; 2021-02-05 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Hart County Stone; 2022-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Glass Paving & Stone; 2022-05-14 to 2010-09-12; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Hinkle Contracting Company LLC; 2022-05-14 to 2021-02-04; source msha-controller-operator-history